CGPA to Percentage Calculator

About this calculator

This calculator converts a CGPA (Cumulative Grade Point Average) to a percentage for whichever grading scale your institution uses. Pick the scale on your grade card — the India 10-point scale, the US/Canada 4.0 scale, a 5.0 scale, the Australian 7.0 scale, or the South Korean 4.5 scale — and the percentage updates instantly, along with a 4.0 GPA equivalent and your class or division.

How to read your results

The headline figure is your percentage. The formula echo beneath it shows exactly how it was calculated — Percentage = CGPA × factor — and a badge tells you whether that factor is official or approximate. The India 10-point scale uses the officially published CBSE multiplier of 9.5 (marked "CBSE official"). The other scales have no single official formula, so the calculator uses the standard linear rescale (×100 ÷ scale maximum) and labels the result "approximate". The conversion scale further down shows three proportional bars — your CGPA on its own scale, the resulting percentage, and the 4.0-scale GPA equivalent — so you can see where your score sits on each.

How it's calculated

The conversion is Percentage = CGPA × factor. The factor depends on the chosen scale: for the India 10-point scale it is the officially published CBSE constant 9.5 (CBSE Circular 24/2010); for every other scale it is the linear rescale factor 100 ÷ scale maximum (so the 4.0 scale uses ×25, the 5.0 scale ×20, the 7.0 scale ×100/7, and the 4.5 scale ×100/4.5). The 4.0-scale GPA equivalent uses GPA₄ = (CGPA ÷ scale maximum) × 4. Every CGPA is validated to fall within [0, scale maximum] before any conversion runs.

Worked example

A student scored a CGPA of 9.2 on the India 10-point (CBSE) scale.

Percentage = 9.2 × 9.5 = 87.4% (CBSE official). The 4.0-scale GPA equivalent is (9.2 / 10) × 4 = 3.68 / 4.0.

Frequently asked questions

Why is the CBSE multiplier 9.5?

CBSE (Central Board of Secondary Education) derived 9.5 by aligning the grade-point ranges on its Class 10 mark sheet with the corresponding percentage bands. Each grade point represents a 9.5-percentage-point band (e.g. a grade point of 10 maps to 95–100%), so multiplying by 9.5 gives the midpoint of that band as a percentage. CBSE Circular 24/2010 published this as the official formula: "Overall indicative percentage of marks = 9.5 × CGPA".

Which grading scales does this support?

Five scales: the India 10-point scale (CBSE/UGC), the US and Canada 4.0 scale, a 5.0 scale, the Australian 7.0 scale, and the South Korean 4.5 scale. Pick the maximum grade point printed on your grade card and the calculator applies the right factor automatically.

Why is only the 10-point conversion marked "official"?

The 9.5 multiplier for the India 10-point scale is published by CBSE, so it is an official, exam-board-endorsed conversion. The other scales have no single official percentage formula. For those, the calculator uses the standard linear rescale — percentage = CGPA × (100 ÷ scale maximum) — which is widely used but approximate. Always check your own institution's conversion policy before quoting a percentage on an official form.

How accurate is the 4.0 GPA equivalent?

The 4.0 equivalent is a linear rescaling: (CGPA / scale maximum) × 4. It gives a rough indication for international applications but is not an official conversion — US universities run their own transcript evaluations and do not universally accept this formula.

What do "Distinction" and "First class" mean here?

They are the standard Indian division bands keyed off the percentage: Distinction at 75% or above, First class at 60–74.9%, Second class at 50–59.9%, and Pass at 40–49.9%. Your own board or university may set different cut-offs, so treat these as a common reference rather than a fixed rule.

Sources

• www.cbse.gov.in/circulars/cir24-2010.pdf
• en.wikipedia.org/wiki/Academic_grading_in_India
• en.wikipedia.org/wiki/Academic_grading_in_the_United_States

Reviewed by the YouCalc Team · Last reviewedJune 11, 2026